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Reverse debugging for PowerPC.

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This commit is contained in:
Wei-cheng Wang
2015-01-17 14:30:33 +08:00
committed by Cole Wang
parent 2608dbf8a3
commit b4cdae6fe5
7 changed files with 2111 additions and 3 deletions
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18
gdb/ChangeLog
View File

@@ -1,3 +1,21 @@
2015-01-17 Wei-cheng Wang <cole945@gmail.com>
Ulrich Weigand <uweigand@de.ibm.com>
* configure.tgt (powerpc*-*-linux): Add linux-record.o to
gdb_target_obs.
(ppc_linux_record_tdep, ppc64_linux_record_tdep): New for linux syscall
record.
(ppc_canonicalize_syscall, ppc_linux_syscall_record,
ppc_linux_record_signal, ppc_init_linux_record_tdep): New functions.
(ppc_linux_init_abi): Set process_record, process_record_signal.
* ppc-tdep.h (struct gdbarch_tdep): Add ppc_syscall_record and
ppc_linux_record_tdep to gdbarch_tdep.
(ppc_process_record): New declaration.
* rs6000-tdep.c (ppc_record_vsr, ppc_process_record_op4,
ppc_process_record_op19, ppc_process_record_op31,
ppc_process_record_op59, ppc_process_record_op60,
ppc_process_record_op63, ppc_process_record): New functions.
2015-01-17 Wei-cheng Wang <cole945@gmail.com>
* rs6000-tdep.c (rs6000_in_function_epilogue_p): Rename to

3
gdb/configure.tgt
View File

@@ -439,7 +439,8 @@ powerpc*-*-linux*)
ppc64-tdep.o solib-svr4.o solib-spu.o \
spu-multiarch.o \
glibc-tdep.o symfile-mem.o linux-tdep.o \
ravenscar-thread.o ppc-ravenscar-thread.o"
ravenscar-thread.o ppc-ravenscar-thread.o \
linux-record.o "
gdb_sim=../sim/ppc/libsim.a
build_gdbserver=yes
;;

399
gdb/ppc-linux-tdep.c
View File

@@ -49,6 +49,8 @@
#include "spu-tdep.h"
#include "xml-syscall.h"
#include "linux-tdep.h"
#include "linux-record.h"
#include "record-full.h"
#include "stap-probe.h"
#include "ax.h"
@@ -764,6 +766,167 @@ ppc_linux_get_syscall_number (struct gdbarch *gdbarch,
return ret;
}
/* PPC process record-replay */
static struct linux_record_tdep ppc_linux_record_tdep;
static struct linux_record_tdep ppc64_linux_record_tdep;
static enum gdb_syscall
ppc_canonicalize_syscall (int syscall)
{
/* See arch/powerpc/include/uapi/asm/unistd.h */
if (syscall <= 165)
return syscall;
else if (syscall >= 167 && syscall <= 190) /* Skip query_module 166 */
return syscall + 1;
else if (syscall >= 192 && syscall <= 197) /* mmap2 */
return syscall;
else if (syscall == 208) /* tkill */
return gdb_sys_tkill;
else if (syscall >= 207 && syscall <= 220) /* gettid */
return syscall + 224 - 207;
else if (syscall >= 234 && syscall <= 239) /* exit_group */
return syscall + 252 - 234;
else if (syscall >= 240 && syscall <=248) /* timer_create */
return syscall += 259 - 240;
else if (syscall >= 250 && syscall <=251) /* tgkill */
return syscall + 270 - 250;
else if (syscall == 336)
return gdb_sys_recv;
else if (syscall == 337)
return gdb_sys_recvfrom;
else if (syscall == 342)
return gdb_sys_recvmsg;
return -1;
}
static int
ppc_linux_syscall_record (struct regcache *regcache)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
ULONGEST scnum;
enum gdb_syscall syscall_gdb;
int ret;
int i;
regcache_raw_read_unsigned (regcache, tdep->ppc_gp0_regnum, &scnum);
syscall_gdb = ppc_canonicalize_syscall (scnum);
if (syscall_gdb < 0)
{
printf_unfiltered (_("Process record and replay target doesn't "
"support syscall number %d\n"), (int) scnum);
return 0;
}
if (syscall_gdb == gdb_sys_sigreturn
|| syscall_gdb == gdb_sys_rt_sigreturn)
{
int i, j;
int regsets[] = { tdep->ppc_gp0_regnum,
tdep->ppc_fp0_regnum,
tdep->ppc_vr0_regnum,
tdep->ppc_vsr0_upper_regnum };
for (j = 0; j < 4; j++)
{
if (regsets[j] == -1)
continue;
for (i = 0; i < 32; i++)
{
if (record_full_arch_list_add_reg (regcache, regsets[j] + i))
return -1;
}
}
if (record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum))
return -1;
if (record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum))
return -1;
if (record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum))
return -1;
if (record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum))
return -1;
return 0;
}
if (tdep->wordsize == 8)
ret = record_linux_system_call (syscall_gdb, regcache,
&ppc64_linux_record_tdep);
else
ret = record_linux_system_call (syscall_gdb, regcache,
&ppc_linux_record_tdep);
if (ret != 0)
return ret;
/* Record registers clobbered during syscall. */
for (i = 3; i <= 12; i++)
{
if (record_full_arch_list_add_reg (regcache, tdep->ppc_gp0_regnum + i))
return -1;
}
if (record_full_arch_list_add_reg (regcache, tdep->ppc_gp0_regnum + 0))
return -1;
if (record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum))
return -1;
if (record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum))
return -1;
if (record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum))
return -1;
return 0;
}
static int
ppc_linux_record_signal (struct gdbarch *gdbarch, struct regcache *regcache,
enum gdb_signal signal)
{
/* See handle_rt_signal64 in arch/powerpc/kernel/signal_64.c
handle_rt_signal32 in arch/powerpc/kernel/signal_32.c
arch/powerpc/include/asm/ptrace.h
for details. */
const int SIGNAL_FRAMESIZE = 128;
const int sizeof_rt_sigframe = 1440 * 2 + 8 * 2 + 4 * 6 + 8 + 8 + 128 + 512;
ULONGEST sp;
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int i;
for (i = 3; i <= 12; i++)
{
if (record_full_arch_list_add_reg (regcache, tdep->ppc_gp0_regnum + i))
return -1;
}
if (record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum))
return -1;
if (record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum))
return -1;
if (record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum))
return -1;
if (record_full_arch_list_add_reg (regcache, gdbarch_pc_regnum (gdbarch)))
return -1;
if (record_full_arch_list_add_reg (regcache, gdbarch_sp_regnum (gdbarch)))
return -1;
/* Record the change in the stack.
frame-size = sizeof (struct rt_sigframe) + SIGNAL_FRAMESIZE */
regcache_raw_read_unsigned (regcache, gdbarch_sp_regnum (gdbarch), &sp);
sp -= SIGNAL_FRAMESIZE;
sp -= sizeof_rt_sigframe;
if (record_full_arch_list_add_mem (sp, SIGNAL_FRAMESIZE + sizeof_rt_sigframe))
return -1;
if (record_full_arch_list_add_end ())
return -1;
return 0;
}
static void
ppc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
{
@@ -1234,6 +1397,234 @@ static const struct frame_unwind ppu2spu_unwind = {
ppu2spu_prev_arch,
};
/* Initialize linux_record_tdep if not initialized yet. */
static void
ppc_init_linux_record_tdep (struct linux_record_tdep *record_tdep,
int wordsize)
{
/* Simply return if it had been initialized. */
if (record_tdep->size_pointer != 0)
return;
/* These values are the size of the type that will be used in a system
call. They are obtained from Linux Kernel source. */
if (wordsize == 8)
{
record_tdep->size_pointer = 8;
record_tdep->size__old_kernel_stat = 32;
record_tdep->size_tms = 32;
record_tdep->size_loff_t = 8;
record_tdep->size_flock = 32;
record_tdep->size_oldold_utsname = 45;
record_tdep->size_ustat = 32;
record_tdep->size_old_sigaction = 152;
record_tdep->size_old_sigset_t = 128;
record_tdep->size_rlimit = 16;
record_tdep->size_rusage = 144;
record_tdep->size_timeval = 16;
record_tdep->size_timezone = 8;
record_tdep->size_old_gid_t = 4;
record_tdep->size_old_uid_t = 4;
record_tdep->size_fd_set = 128;
record_tdep->size_dirent = 280;
record_tdep->size_dirent64 = 280;
record_tdep->size_statfs = 120;
record_tdep->size_statfs64 = 120;
record_tdep->size_sockaddr = 16;
record_tdep->size_int = 4;
record_tdep->size_long = 8;
record_tdep->size_ulong = 8;
record_tdep->size_msghdr = 56;
record_tdep->size_itimerval = 32;
record_tdep->size_stat = 144;
record_tdep->size_old_utsname = 325;
record_tdep->size_sysinfo = 112;
record_tdep->size_msqid_ds = 120;
record_tdep->size_shmid_ds = 112;
record_tdep->size_new_utsname = 390;
record_tdep->size_timex = 208;
record_tdep->size_mem_dqinfo = 24;
record_tdep->size_if_dqblk = 72;
record_tdep->size_fs_quota_stat = 80;
record_tdep->size_timespec = 16;
record_tdep->size_pollfd = 8;
record_tdep->size_NFS_FHSIZE = 32;
record_tdep->size_knfsd_fh = 132;
record_tdep->size_TASK_COMM_LEN = 32;
record_tdep->size_sigaction = 152;
record_tdep->size_sigset_t = 128;
record_tdep->size_siginfo_t = 128;
record_tdep->size_cap_user_data_t = 8;
record_tdep->size_stack_t = 24;
record_tdep->size_off_t = 8;
record_tdep->size_stat64 = 104;
record_tdep->size_gid_t = 4;
record_tdep->size_uid_t = 4;
record_tdep->size_PAGE_SIZE = 0x10000; /* 64KB */
record_tdep->size_flock64 = 32;
record_tdep->size_io_event = 32;
record_tdep->size_iocb = 64;
record_tdep->size_epoll_event = 16;
record_tdep->size_itimerspec = 32;
record_tdep->size_mq_attr = 64;
record_tdep->size_siginfo = 128;
record_tdep->size_termios = 44;
record_tdep->size_pid_t = 4;
record_tdep->size_winsize = 8;
record_tdep->size_serial_struct = 72;
record_tdep->size_serial_icounter_struct = 80;
record_tdep->size_size_t = 8;
record_tdep->size_iovec = 16;
}
else if (wordsize == 4)
{
record_tdep->size_pointer = 4;
record_tdep->size__old_kernel_stat = 32;
record_tdep->size_tms = 16;
record_tdep->size_loff_t = 8;
record_tdep->size_flock = 16;
record_tdep->size_oldold_utsname = 45;
record_tdep->size_ustat = 20;
record_tdep->size_old_sigaction = 152;
record_tdep->size_old_sigset_t = 128;
record_tdep->size_rlimit = 8;
record_tdep->size_rusage = 72;
record_tdep->size_timeval = 8;
record_tdep->size_timezone = 8;
record_tdep->size_old_gid_t = 4;
record_tdep->size_old_uid_t = 4;
record_tdep->size_fd_set = 128;
record_tdep->size_dirent = 268;
record_tdep->size_dirent64 = 280;
record_tdep->size_statfs = 64;
record_tdep->size_statfs64 = 88;
record_tdep->size_sockaddr = 16;
record_tdep->size_int = 4;
record_tdep->size_long = 4;
record_tdep->size_ulong = 4;
record_tdep->size_msghdr = 28;
record_tdep->size_itimerval = 16;
record_tdep->size_stat = 88;
record_tdep->size_old_utsname = 325;
record_tdep->size_sysinfo = 64;
record_tdep->size_msqid_ds = 68;
record_tdep->size_shmid_ds = 60;
record_tdep->size_new_utsname = 390;
record_tdep->size_timex = 128;
record_tdep->size_mem_dqinfo = 24;
record_tdep->size_if_dqblk = 72;
record_tdep->size_fs_quota_stat = 80;
record_tdep->size_timespec = 8;
record_tdep->size_pollfd = 8;
record_tdep->size_NFS_FHSIZE = 32;
record_tdep->size_knfsd_fh = 132;
record_tdep->size_TASK_COMM_LEN = 32;
record_tdep->size_sigaction = 140;
record_tdep->size_sigset_t = 128;
record_tdep->size_siginfo_t = 128;
record_tdep->size_cap_user_data_t = 4;
record_tdep->size_stack_t = 12;
record_tdep->size_off_t = 4;
record_tdep->size_stat64 = 104;
record_tdep->size_gid_t = 4;
record_tdep->size_uid_t = 4;
record_tdep->size_PAGE_SIZE = 0x10000; /* 64KB */
record_tdep->size_flock64 = 32;
record_tdep->size_io_event = 32;
record_tdep->size_iocb = 64;
record_tdep->size_epoll_event = 16;
record_tdep->size_itimerspec = 16;
record_tdep->size_mq_attr = 32;
record_tdep->size_siginfo = 128;
record_tdep->size_termios = 44;
record_tdep->size_pid_t = 4;
record_tdep->size_winsize = 8;
record_tdep->size_serial_struct = 60;
record_tdep->size_serial_icounter_struct = 80;
record_tdep->size_size_t = 4;
record_tdep->size_iovec = 8;
}
else
internal_error (__FILE__, __LINE__, _("unexpected wordsize"));
/* These values are the second argument of system call "sys_fcntl"
and "sys_fcntl64". They are obtained from Linux Kernel source. */
record_tdep->fcntl_F_GETLK = 5;
record_tdep->fcntl_F_GETLK64 = 12;
record_tdep->fcntl_F_SETLK64 = 13;
record_tdep->fcntl_F_SETLKW64 = 14;
record_tdep->arg1 = PPC_R0_REGNUM + 3;
record_tdep->arg2 = PPC_R0_REGNUM + 4;
record_tdep->arg3 = PPC_R0_REGNUM + 5;
record_tdep->arg4 = PPC_R0_REGNUM + 6;
record_tdep->arg5 = PPC_R0_REGNUM + 7;
record_tdep->arg6 = PPC_R0_REGNUM + 8;
/* These values are the second argument of system call "sys_ioctl".
They are obtained from Linux Kernel source.
See arch/powerpc/include/uapi/asm/ioctls.h. */
record_tdep->ioctl_TCGETS = 0x403c7413;
record_tdep->ioctl_TCSETS = 0x803c7414;
record_tdep->ioctl_TCSETSW = 0x803c7415;
record_tdep->ioctl_TCSETSF = 0x803c7416;
record_tdep->ioctl_TCGETA = 0x40147417;
record_tdep->ioctl_TCSETA = 0x80147418;
record_tdep->ioctl_TCSETAW = 0x80147419;
record_tdep->ioctl_TCSETAF = 0x8014741c;
record_tdep->ioctl_TCSBRK = 0x2000741d;
record_tdep->ioctl_TCXONC = 0x2000741e;
record_tdep->ioctl_TCFLSH = 0x2000741f;
record_tdep->ioctl_TIOCEXCL = 0x540c;
record_tdep->ioctl_TIOCNXCL = 0x540d;
record_tdep->ioctl_TIOCSCTTY = 0x540e;
record_tdep->ioctl_TIOCGPGRP = 0x40047477;
record_tdep->ioctl_TIOCSPGRP = 0x80047476;
record_tdep->ioctl_TIOCOUTQ = 0x40047473;
record_tdep->ioctl_TIOCSTI = 0x5412;
record_tdep->ioctl_TIOCGWINSZ = 0x40087468;
record_tdep->ioctl_TIOCSWINSZ = 0x80087467;
record_tdep->ioctl_TIOCMGET = 0x5415;
record_tdep->ioctl_TIOCMBIS = 0x5416;
record_tdep->ioctl_TIOCMBIC = 0x5417;
record_tdep->ioctl_TIOCMSET = 0x5418;
record_tdep->ioctl_TIOCGSOFTCAR = 0x5419;
record_tdep->ioctl_TIOCSSOFTCAR = 0x541a;
record_tdep->ioctl_FIONREAD = 0x4004667f;
record_tdep->ioctl_TIOCINQ = 0x4004667f;
record_tdep->ioctl_TIOCLINUX = 0x541c;
record_tdep->ioctl_TIOCCONS = 0x541d;
record_tdep->ioctl_TIOCGSERIAL = 0x541e;
record_tdep->ioctl_TIOCSSERIAL = 0x541f;
record_tdep->ioctl_TIOCPKT = 0x5420;
record_tdep->ioctl_FIONBIO = 0x8004667e;
record_tdep->ioctl_TIOCNOTTY = 0x5422;
record_tdep->ioctl_TIOCSETD = 0x5423;
record_tdep->ioctl_TIOCGETD = 0x5424;
record_tdep->ioctl_TCSBRKP = 0x5425;
record_tdep->ioctl_TIOCSBRK = 0x5427;
record_tdep->ioctl_TIOCCBRK = 0x5428;
record_tdep->ioctl_TIOCGSID = 0x5429;
record_tdep->ioctl_TIOCGPTN = 0x40045430;
record_tdep->ioctl_TIOCSPTLCK = 0x80045431;
record_tdep->ioctl_FIONCLEX = 0x20006602;
record_tdep->ioctl_FIOCLEX = 0x20006601;
record_tdep->ioctl_FIOASYNC = 0x8004667d;
record_tdep->ioctl_TIOCSERCONFIG = 0x5453;
record_tdep->ioctl_TIOCSERGWILD = 0x5454;
record_tdep->ioctl_TIOCSERSWILD = 0x5455;
record_tdep->ioctl_TIOCGLCKTRMIOS = 0x5456;
record_tdep->ioctl_TIOCSLCKTRMIOS = 0x5457;
record_tdep->ioctl_TIOCSERGSTRUCT = 0x5458;
record_tdep->ioctl_TIOCSERGETLSR = 0x5459;
record_tdep->ioctl_TIOCSERGETMULTI = 0x545a;
record_tdep->ioctl_TIOCSERSETMULTI = 0x545b;
record_tdep->ioctl_TIOCMIWAIT = 0x545c;
record_tdep->ioctl_TIOCGICOUNT = 0x545d;
record_tdep->ioctl_FIOQSIZE = 0x40086680;
}
static void
ppc_linux_init_abi (struct gdbarch_info info,
@@ -1414,6 +1805,14 @@ ppc_linux_init_abi (struct gdbarch_info info,
}
set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
/* Support reverse debugging. */
set_gdbarch_process_record (gdbarch, ppc_process_record);
set_gdbarch_process_record_signal (gdbarch, ppc_linux_record_signal);
tdep->ppc_syscall_record = ppc_linux_syscall_record;
ppc_init_linux_record_tdep (&ppc_linux_record_tdep, 4);
ppc_init_linux_record_tdep (&ppc64_linux_record_tdep, 8);
}
/* Provide a prototype to silence -Wmissing-prototypes. */

5
gdb/ppc-tdep.h
View File

@@ -259,6 +259,8 @@ struct gdbarch_tdep
/* ISA-specific types. */
struct type *ppc_builtin_type_vec64;
struct type *ppc_builtin_type_vec128;
int (*ppc_syscall_record) (struct regcache *regcache);
};
@@ -318,6 +320,9 @@ extern CORE_ADDR ppc_insn_d_field (unsigned int insn);
extern CORE_ADDR ppc_insn_ds_field (unsigned int insn);
extern int ppc_process_record (struct gdbarch *gdbarch,
struct regcache *regcache, CORE_ADDR addr);
/* Instruction size. */
#define PPC_INSN_SIZE 4

1677
gdb/rs6000-tdep.c
View File

File diff suppressed because it is too large Load Diff

6
gdb/testsuite/ChangeLog
View File

@@ -1,3 +1,9 @@
2015-01-17 Wei-cheng Wang <cole945@gmail.com>
* lib/gdb.exp (supports_process_record): Return true for
powerpc*-*-linux*.
(supports_reverse): Likewise.
2015-01-15 Don Breazeal <donb@codesourcery.com>
* gdb.base/attach-pie-noexec.exp: Use can_spawn_for_attach

6
gdb/testsuite/lib/gdb.exp
View File

@@ -1890,7 +1890,8 @@ proc supports_process_record {} {
}
if { [istarget "arm*-*-linux*"] || [istarget "x86_64-*-linux*"]
|| [istarget "i\[34567\]86-*-linux*"] } {
|| [istarget "i\[34567\]86-*-linux*"]
|| [istarget "powerpc*-*-linux*"] } {
return 1
}
@@ -1906,7 +1907,8 @@ proc supports_reverse {} {
}
if { [istarget "arm*-*-linux*"] || [istarget "x86_64-*-linux*"]
|| [istarget "i\[34567\]86-*-linux*"] } {
|| [istarget "i\[34567\]86-*-linux*"]
|| [istarget "powerpc*-*-linux*"] } {
return 1
}